Hello Everyone, I'm newbie to driver development & have a question on CDC NCM gadget driver. When I load the module g_ncm.ko on the target board and execute "lsusb" on host, there is some delay in response. (about 5-10 seconds) However, if I trim the string as shown below (in code changes), "lsusb" responds quickly. I was wondering if anyone could help me understand the reason for this behavior. I'm looking at kernel version 3.0.35. https://github.com/boundarydevices/linux-imx6/blob/boundary-imx_3.0.35_4.1.0/drivers/usb/gadget/f_ncm.c#L341 Code change: ---------- @@ -339,7 +339,7 @@ static struct usb_descriptor_header *ncm_hs_function[] __initdata = { #define STRING_IAD_IDX 3 static struct usb_string ncm_string_defs[] = { - [STRING_CTRL_IDX].s = "CDC Network Control Model (NCM)", + [STRING_CTRL_IDX].s = "CDC Network Control Model", [STRING_MAC_IDX].s = NULL /* DYNAMIC */, ----------- Thanks -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
